Computer Security
In the past few years, viruses like "I Love You" and "SoBig" have generated much publicity and apprehension and highlighted problems of computer security. In the last month alone, experts estimate that 52 new viruses have spread through computer networks. In addition, the growing incidence of identity theft also illustrates the growing sophistication of hackers and their tools.
This paper examines the main problems related to keeping the information on one's computer safe and secure. The first part of the paper looks at the main threats to computer security, both at home and in larger networks. These include hackers and infected files.
The next part then discusses the steps computer users need to take to protect themselves from such attacks, from simple steps such as periodically changing passwords to installing elaborate firewalls.
Types of Viruses
Breaches in computer security usually take the form of infected files. The most basic of these infected files is the "virus," a string of computer code programmed to replicate itself. Most viruses enter one's computer through e-mail attachments. However, viruses can also be spread through Web pages (Evarts).
Similar to the virus, the "trojan" often appears an e-mail attachment with a misleading title. Users unwittingly launch the trojan when they click on the attachment (Evarts). Often, the trojan also launches the computer's e-mail program, sending itself as an attachment to all the e-mail addresses in a user's address book.
The computer worm is more malicious than the simple virus. While a virus needs to be activated by a user, a worm can crawl in and out undetected while a computer is connected to the Internet. The most dangerous recent worms have already caused "denial of service attacks"...
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